About building: To get better results you'd want to check the controls on the Sector Map thing, and build a Advanced Satellite (I think it's that one).
Then you press the button on sector map to activate the Sats' 3D camera (don't remember what key), and can easily move around, spin and rotate your station easily...this is mandatory for building complexes, but I believe any "experienced" player knows this..
I personally find this game awesome. I saw my uncle playing X² years ago, then I searched it for months so I could buy it but never found. I had to download a torrent, and my internet sucked by that time. I think it was in 2007..
Then I got X³: Reunion and got crazy with all the improvements, awesome graphics and nice plotline (I liked X "lore" and plot, gotta love space..)
What I most love about it, is the fact that if you put a sattelite in each sector, you can monitor the whole "X universe". Even if you are in a sector, you can know what's happening in another one. It's too good.
Also the "ShockWave Weapons" (for their name) are AWESOME to destroy pirate bases.
If you get a ship able to carry 2 or 3 of them, you can fire at the base's launch deck and every ship that comes out of it is destroyed in seconds.
Your fps drops to 10 or lower, but it's the price to pay to see all those guys that love to destroy your freighters die.